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/daily ·27 OCT 2026 ·TUESDAY ·2 MIN READ ·5 STORIES

Solar Tops Nuclear, and the Grid Keeps Moving

Solar passed nuclear in global installed capacity this week, Massachusetts locked in battery targets with real policy behind them, and Anthropic's IPO filing put AI's electricity demands into a public legal document for the first time.

01 / The Day

TUESDAY 27 OCT 2026, ranked

05

Solar Power Has Overtaken Nuclear in Global Installed Capacity

Solar photovoltaic capacity has globally surpassed nuclear for the first time in history — a milestone driven by five consecutive years of record solar installation exceeding 400 GW annually, while nuclear capacity has remained essentially flat at around 390 GW.

  • Global solar cumulative base now above nuclear's ~390 GW; crossover arrived at the early end of IEA projections
  • Solar capacity share is not yet matched by generation share — nuclear runs at 85-90% capacity factor versus solar's ~20%
  • Five consecutive years of 400+ GW annual solar additions drove the crossover
Why it mattersThe capacity crossover is a cultural and political milestone regardless of generation realities — it changes what 'biggest' means in public energy discourse, and public discourse shapes permitting.
01 bbc.com↗

Massachusetts Sets Large Battery Storage Targets Backed by New Policy

Massachusetts released a new battery storage deployment target aligned with its 2030 grid decarbonisation plan, pairing the numerical goals with a new procurement mechanism and permitting streamlining — making it one of the most comprehensively backed state storage programmes in the US.

  • Procurement mechanism offers index-linked contracts to reduce offtake risk for developers
  • Large battery projects advancing near Boston, anchored by the new targets and a SMART-like incentive structure
  • Massachusetts joins California, New York, and Illinois in setting statutory storage targets with supporting policy
Why it mattersState-level storage policy is now the primary driver of US grid battery deployment after federal ITC uncertainty; Massachusetts' programme design will be copied by other grid-constrained states.
02 canarymedia.com↗

AtkinsRéalis Signs Deal to Study Exporting CANDU Reactors to Indiana

Canadian engineering firm AtkinsRéalis signed a memorandum of understanding with Hoosier Energy and the state of Indiana to study building up to 6 GW of CANDU pressurised heavy-water reactors — the first serious attempt to export the Canadian design to the US market.

  • Up to 6 GW in Indiana would be the largest nuclear deployment in a single US state in 40 years
  • CANDU uses natural uranium without enrichment, removing a key dependency on US enrichment facilities
  • MOU triggers a multi-year NRC pre-application process; no construction decision has been made
Why it mattersCANDU's natural-uranium advantage is particularly relevant in the current US enrichment bottleneck — if the NRC application advances, it would be the first new reactor type approved for US construction in a generation.
03 heatmap.news↗

Anthropic's IPO Filing Has a Lot to Say About Power

Anthropic's S-1 devotes unusual space to energy access as a material business risk, citing data-centre power procurement, electricity cost escalation, ESG pressure from institutional investors, and California wildfire risk to its physical infrastructure.

  • Power constraints listed alongside compute access as a front-line operational risk in the S-1
  • ESG regulatory pressure from European institutional investors flagged as a governance risk for a US-listed company
  • California wildfire risk cited for Anthropic's own facilities — it does not yet rely primarily on cloud providers
Why it mattersThe energy-risk disclosures will be mandatory reading for utility regulators and grid planners who are now formally on notice that frontier AI demand is a balance-sheet risk, not a forecast assumption.
04 heatmap.news↗

Lula Wins Brazil's Presidency for a Record Fourth Term

Luiz Inácio Lula da Silva won Brazil's presidential election for a fourth time, defeating Flávio Bolsonaro — continuing Brazil's policy of zero net deforestation in the Amazon and its renewable energy expansion programme.

  • Brazil added 16 GW of wind and solar in 2025 under Lula's third term; fourth term targets 25 GW annually by 2028
  • Amazon deforestation fell to near-zero under Lula's prior term after record highs under Bolsonaro
  • Election result removes near-term risk of a policy reversal on Brazil's UNFCCC commitments
Why it mattersBrazil hosts 60% of the Amazon, the world's largest terrestrial carbon sink; who governs Brazil is a global climate question, not just a domestic political one.
05 heatmap.news↗
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/FRI 30 OCTLG and Tesla; Sodium Goes National; BYD Goes European/THU 29 OCTCATL goes big, sodium-ion finds its data centre customer, and China owns electrolysers/WED 28 OCTWednesday: Virtual Gigawatts, Weird Reactors, One Surrender/TUE 27 OCTSolar Tops Nuclear, and the Grid Keeps Moving/MON 26 OCT2026-10-26/SUN 25 OCTWhen the data centres blink/SAT 24 OCTKorea's grid flipped, Google's running a power plant/FRI 23 OCTSonnen Falls, Waratah Scales, BNEF Calls 2026 Peak Storage/THU 22 OCTGigawatts of intent, from Kentucky to the outback/WED 21 OCTWednesday: 400 Wh/kg, Anode-Free Sodium, New York Goes Thermal/TUE 20 OCTSolid-state graduates, seafloor sparks/MON 19 OCTSolar Records, AI Batteries, and a Geothermal First/SUN 18 OCTGrid Foundations/SAT 17 OCTTechnology War Saturday/FRI 16 OCTThe Build vs. the Setback/THU 15 OCTThe Energy Brief — October 15, 2026/WED 14 OCTCells and Gigafactories/TUE 13 OCTTuesday dispatch/MON 12 OCTThe residential battery surge and the storage giant stirring/SUN 11 OCTThe chemistry and the credibility/SAT 10 OCTSaturday Grid